Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Old Chatham's shift into August is marked by a subtle change to a still warm 78.8°F (26°C) from July's 80.8°F (27.1°C) in temperature. Old Chatham registers a significant reduction from the day's heat, with an average temperature drop to a moderate 57.2°F (14°C) in August.Humidity
The average relative humidity in August in Old Chatham is 78%.Rainfall
In Old Chatham, in August, during 13.4 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 135.1 rainfall days, and 20.39" (518mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 51min.On the first day of August, sunrise is at 5:47 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:29 pm EDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.3h of sunshine.UV index
The months with the highest UV index in Old Chatham, New York, are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 in August translates into these instructions:
Ensure safety - Sun damage prevention is strongly urged. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Old Chatham in August?
What is the average humidity in August in Old Chatham?
How much does it rain in Old Chatham in August?
When it does not snow in Old Chatham?
What is the average length of the day in August in Old Chatham?
What time are sunrise and sunset in August in Old Chatham?
What are the months with the most sunshine in Old Chatham?
How long on average sun shines in August in Old Chatham?
What is the month with the highest UV index in Old Chatham?
What is the UV index reading in August in Old Chatham?
Average temperature in August
Old Chatham, NY
- Average high temperature in August: 78.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in August: 57.2°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in August
Old Chatham, NY
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Old Chatham, NY
- Average wind speed in August: 5mph
The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in August
Old Chatham, NY
- Average humidity in August: 78%
The months with the highest relative humidity are February and December (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in August
Old Chatham, NY
- Average rainfall in August: 1.85"
The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in August
Old Chatham, NY
- Average rainfall days in August: 13.4 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in August
Old Chatham, NY
- Average snowfall in August: 0"
The month with the highest snowfall is March (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Old Chatham, NY
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Old Chatham, NY
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 10h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in August
Old Chatham, NY
- Average sunshine days in August: 14.7 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is June (12.5 days).
Average UV index in August
Old Chatham, NY
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in August
Old Chatham, NY
- Average cloud cover in August: 35
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in August
Old Chatham, NY
- Average visibility in August: 5mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
Old Chatham, New York, USA
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